Cops were called to the fuel stop in Atlanta following reports the hip-hop star had attacked a man who allegedly insulted his girlfriend, reported TMZ online.
The pair was taken into custody for disorderly conduct, but were released shortly afterwards.
The Southern hip-hop star claimed he only acted on self-defense.
"He was calling my girlfriend names and then put his hands on me ... So I had to lay them paws on him," he said of what prompted the fight.